EMC2104 datasheet(51/101 Pages) SMSC

51 / 101 page

Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown

Datasheet

SMSC EMC2104

Revision 1.74 (05-08-08)

DATASHEET

6.3

Critical/Thermal Shutdown Temperature Registers

The Critical/Thermal Shutdown Temperature Register is a read-only register that stores the Voltage

Programmable Threshold temperature used in the Thermal / Critical Shutdown circuitry. The contents

of the register reflect the calculated temperature based on the TRIP_SET voltage. This register is

updated at the end of every monitoring cycle based on the current value of the TRIP_SET voltage.

The data format is shown in Table 6.5.

Table 6.3 Temperature Data Format

TEMPERATURE (°C)

BINARY

HEX (AS READ BY

REGISTERS)

Diode Fault

1000_0000_000b

80_00h

-63.875

1100_0000_001b

C0_20h

-63

1100_0001_000b

C1_00h

-1

1111_1111_000b

FF_00h

-0.125

1111_1111_111b

FF_E0h

0000_0000_000b

00_00h

0.125

0000_0000_001b

00_20h

0000_0001_000b

01_00h

0011_1111_000b

3F_00h

0100_0000_000b

40_00h

0100_0001_000b

41_00h

127

0111_1111_000b

7F_00h

127.875

0111_1111_111b

7F_E0h

Table 6.4 Critical/Thermal Shutdown Temperature Registers

ADDR

R/W

B7B6B5B4B3B2B1B0

DEFAULT

0Ah

Critical/Thermal

Shutdown

Temperature

128

7Fh

(+127°C)

Table 6.5 Critical / Thermal Shutdown Data Format

TEMPERATURE (°C)

BINARY

HEX

0000_0000b

00h

0000_0001b

01h

0011_1111b

3Fh

0100_0000b

40h

EMC2104 Fiches technique(PDF) 51 Page - SMSC Corporation

EMC2104 Fiches technique(HTML) 51 Page - SMSC Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Fiches technique Télécharger

Lien URL